Cogging and rolling mill for iron and steel



Nov. 20 1923. v 1,474,734

v 4 T. B. ROGERSON COGGING AND ROLLING MILL FOR IRON AND STEEL Filed March 5. 1921 yaw/70ft C? m Patented Nov. 20, 1923'.

THOMAS BOND BOGEBSON, or eLAseow, SCOTLAND;

' Application filed March 5, 1821. Serial No. 450,054.

- (GRANTED UNDER THE raovrsioirs or THE ACT or Manon 3, 11921 41" STA i313.

To all whom it may concern:

SON, of East Thorne, TollcrossrGlasgow, Scotland, a British sub ect. have lnvented certain new and useful Improvements in (logging and Rolling Mills for Iron and Steel, of which the following is a specification.

At present with iron or. steel cogging and rolling mills it is usual'to have the rolls car ried in housings and to drive them, through coupling spindles, by means of gear pinions which, in turn, are driven by the engine. The pinions are usually made of cast steel with helical teeth and in some cases these are cut. When a breakage occurs the pinions are expensive to replace and sometimes considerable time is lost in their replaceanother and operatively connected, by suit able coupling spindles, with the mill rolls,

one of the pinions being driven, in the usual manner. from the engine shaft. The lower pinion is preferably driven whilst the other pinion is free to bear by gravity thereon.

The invention can be applied to both two and three high mills. I

On the annexed drawings I have shown my improved friction drive, simply by way of illustration or example, as applied to roughing rolls.

Fig. 1 is an elevation of the rolls and drive and Fig. 2 is an end view of the driv- 7 ing pinions.

A, A represent the roughing rolls turnably supported in housings B, B, fixed on a suitable base C. 7

Under this invention the rolls A, A are driven by toothless friction pinions D, D through suitable coupling spindles E, E the pinions being turnably supported one er pinion D is coupled to the engine or driving shaft G and the upper pinion D is arranged toibea'r by gravity on the lower. Be it known 'tliattI, THOMAS BOND ROGER-u pinion DH To this end the contact sin-- ;faces of-the side bearing blocks H H. for the upper pinion D aremade straight and paral lel to permit vertical movementof the upper pinionso as to ensure that it will rest freely on the lower pinion. I

Thedriving pinions are made of cast iron or steel turned in a lathe to the proper size and, as will be understood theyare of considerable weight and drive by surface friction. In practice I find that they last much longer than ordinary toothed pinions and,

in work, obviate the usual shocks to the engine. Each pinion D, D is about half the weight and-has a length of tread approxirolls A or A ment during which the mill has to stand The improved drive eliminates all danger of breakageto the rollhousings and to the rolls and mill engine, which might otherwlse occur, for example. by a plate running into the necks of the rolls in a plate mill, or

of a collar in a section mill. The, drive also prolongs the life of the rolls, which are-ere pensive, because itis far smoother than the toothed gearing'used heretofore. and a regular surface speed throughout all operations is easily obtained. Finally there is a considerable saving in oil and grease due to the absence of toothed gearing. V

; Friction wheels have heretofore been employed in many forms and for. many purposes; but so'far as I am aware heavy frichave never beforebeen used in rolling mills. 218118113111 described, and'with the advantages stated.

' tion drivingpinions made without teeth,

Having now fully described my invention what I claim and desire to secure by Letters Patent is 1. In an 1ron or steel cogglng or rolling friction driving means comprising a houslng, heavy toothless dr1v1ng'p1n1ons one for each roll mounted one above another 1n con stant frictional contact at all times in said housing, a coupling between each' pinion and 'millthe combination with the mill rolls of its roll, and means for connecting one of the friction driving means comprising a housing, heavy toothless driving pinions, one

for each roll mounted one upon the other in said housing, and in constant frictional con tact at all times, said toothless pinions being a each approximately half the weight and two-fifths the length oi its roll, a coupling between each pinion and its roll, and means for connecting one of the pinions with a suitable driving source.

3; In an iron or steel rolling or cogging mill, the combination with the mill rolls of friction driving means comprising a housing, a pairof heavy toothless driving pin ions, one for each 'roll, mounted one upon another in said housing,rthe upper pinion In testimony whereof I afiiX my signature in presence of two witnesses. 1

T. B. RUGERSUN. Witnesses:

H. D. FITZPATRICK, MARY GREEN. 

